Report bugs directly from the WebUI

[rakanalh]

Problem statement

If / when raiden fails, the user has to navigate to the Raiden repo and report a bug. This means that we have to ask the user for the logs and potentially the database to be able to debug the issue. This might be too much for users trying out Raiden.

Potential solution

It would be very beneficial to have a button somewhere in the WebUI which the user can click to report a bug. The bug reporting mechanism could also try to upload the logs automatically somewhere either on github or any free pastebin-like service.